Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
  • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
  • B23P15/06—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass piston rings from one piece
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16J—PISTONS; CYLINDERS; SEALINGS
  • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
  • F16J9/12—Details
  • F16J9/20—Rings with special cross-section; Oil-scraping rings
  • F16J9/206—One-piece oil-scraping rings
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49229—Prime mover or fluid pump making
  • Y10T29/49274—Piston ring or piston packing making
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49229—Prime mover or fluid pump making
  • Y10T29/49274—Piston ring or piston packing making
  • Y10T29/49281—Piston ring or piston packing making including coating or plating
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49229—Prime mover or fluid pump making
  • Y10T29/49274—Piston ring or piston packing making
  • Y10T29/49282—Piston ring or piston packing making including grinding or honing
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49229—Prime mover or fluid pump making
  • Y10T29/49274—Piston ring or piston packing making
  • Y10T29/49284—Piston ring or piston packing making including machining or angular cutting

Definitions

• the invention relates to a method for producing a piston ring with an axial height ⁇ 2 mm.
• Piston oil control ring Piston oil control ring.
• the method for producing the ⁇ labstreifkolbenrings, which includes at least one provided with a wear-resistant coating catwalk is carried out by before the application of the wear-resistant coating on the catwalk side profile is generated, which has in the conical region of a radially projecting from this plane survey that at least this Profile is provided with the wear-resistant coating and, that for setting an over the ring circumference substantially uniform tread profile, at least in the region of the radial elevation, a predeterminable material removal of the coating is made and then the catwalk edges are ground profile, so that a defined cylindrical residual surface is generated in the region of the radial elevation.
• a method for producing a piston ring with an axial height ⁇ 2 mm which has a provided with at least one web radially outer tread, a radially inner peripheral surface and extending therebetween upper and lower flank surfaces by the respective web with a radial outwardly conically tapering contour is provided, then provided the running surface together with the web flanks of the respective conical web with at least one wear-resistant layer and then exclusively the, forming a scraping edge, web edge of the respective web is subjected to an at least partial material from contract.
• Olabstreifkolbenring which is prepared by the process according to the invention.
• the piston rings produced by the method according to the Invention are assets in petrol and diesel engines with very high mold filling assets and low tangential forces used.
• the tool in particular a grinding wheel, only has to process the respective web flank up to about 30 to 90% of the depth of the respective outer groove in order to produce a sharp scraping edge.
• the Invention object is not only applicable to profiles, as shown in DE 100 02 282 Cl. Rather, also oil scraper rings with a height ⁇ 2 mm, preferably ⁇ 1, 5 mm, are processed, which have a cylindrical land surface without further profiles.
• a sharp scraping edge can be produced by the method according to the invention by causing a partial material removal at the web flank facing the oil chamber.
• Figure 1 partial view of a, having an overall height of 1.5 mm
• FIG. 2 shows the piston ring according to FIG. 1 with a coating on the
• Figure 3 representation of a machining tool for editing a defined
• Figure 4 partial view of a ⁇ labstreifrings with cylindrical tread profile
• Figure 5 representation of a machining tool for editing a defined
• FIG. 6 shows an oil scraper ring provided with a web, together with the indicated machining tool.
• the subject of the invention includes inter alia a pictorial representation of DE 100 02 282 C1.
• a ⁇ labstreifring shown in Figures 1 to 3 of this document is used for ring heights of> 2 mm and the tread of this piston ring and machined symmetrically.
• ring heights ⁇ 2 mm, in particular ⁇ 1, 5 mm symmetrical machining of the webs is no longer possible because of the technology in terms of grinding wheel design reaches its limits.
• FIG. 1 shows a piston ring main body 1, which in this example should have a ring height h of 1.5 mm.
• the cross-sectional shape was selected analogously to DE 100 02 282 C1, so that here too similar processing criteria for generating the basic profile can be assumed.
• walkways 2 are generated by mechanical processing such that the web edges 4,4 'taper conically.
• Each of the webs 2 is processed so that a radial elevation 5 is formed. Also visible are the Olablaufbohritch 6, extending from the groove bottom of the groove formed between the webs 2 6 'in the direction of the inner peripheral surface 3. Between the running surface 2 'and the inner circumferential surface 3, the upper 3' and the lower annular edge 3 "extend.
• this piston ring main body 1 prepared in this way is provided with a wear-resistant layer 7 in the region of the entire running surface 2 ', including the webs 2, the elevations 5 and the web edges 4, 4, which discharges only the oil drain holes 6 ,
• a grinding tool 9 indicated only in FIG. 3 is used exclusively for this purpose
• Transition area edited and selbigen - as shown - freed from wear-resistant material 7 The remaining areas of the tread 2 'remain unprocessed.
• the thus processed piston ring main body 1 then results in the finished ⁇ labstreifko Ibenring, which can still be subjected to a lapping process, if necessary.
• the respective sharp wiper edge 8 housing a crank, not shown, facing / oil chamber.
• Figures 4 to 6 show alternative cross-sectional shapes of ⁇ labstreifkolbenringen. The same reference numerals are used so far meaningful analogous to Figures 1 to 3.
• FIG. 4 differs from the processing state approximately in FIG. 2. Differing from FIGS. 1 to 3, in FIG. 4 that the respective web 2 has no profiling on its running surface 2 'facing a friction partner (not shown) but has been machined cylindrically. Otherwise, the cross-sectional shape corresponds to that of FIGS. 1 to 3. A wear-resistant material 7 was likewise applied to the respective web flank 4, 4 '.
• FIG. 5 essentially corresponds to that of FIG. 3.
• the machining tool 9 can be fed in the direction of the respective web flank 4 and carries wear-resistant material in the transition region from the cylindrical running surface 2 'into the web flank 4 over a defined radial height of the web 2. This measure is in the
• Transition region of the tread 2 'in the web edge 4 a sharp scraper edge 8 is formed.
• FIG. 6 shows a plurality of oil scraper piston rings assembled to form a package, which have only a single running surface web 2 and, moreover, one
• tread 2 is also here cylindrical. In analogy to FIG. 5, this carries

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Pistons, Piston Rings, And Cylinders (AREA)
• Tyre Moulding (AREA)

Priority Applications (7)

Applications Claiming Priority (2)

Publications (1)

Family

ID=44903023

Family Applications (1)

Country Status (10)

Cited By (3)

Families Citing this family (7)

Citations (2)

Family Cites Families (15)

• 2010
  • 2010-10-09 DE DE102010048079A patent/DE102010048079B4/de not_active Expired - Fee Related
• 2011
  • 2011-08-13 KR KR1020137008822A patent/KR20130139905A/ko not_active Application Discontinuation
  • 2011-08-13 CN CN201180048046.5A patent/CN103154584B/zh not_active Expired - Fee Related
  • 2011-08-13 WO PCT/DE2011/001604 patent/WO2012045293A1/de active Application Filing
  • 2011-08-13 US US13/823,566 patent/US8973262B2/en active Active
  • 2011-08-13 JP JP2013532047A patent/JP5855110B2/ja not_active Expired - Fee Related
  • 2011-08-13 BR BR112013007331A patent/BR112013007331A2/pt not_active Application Discontinuation
  • 2011-08-13 EP EP11776687.3A patent/EP2625445B1/de not_active Not-in-force
  • 2011-08-13 PT PT117766873T patent/PT2625445E/pt unknown
  • 2011-08-13 RU RU2013121568/06A patent/RU2556951C2/ru not_active IP Right Cessation

Patent Citations (2)

Also Published As

Similar Documents

Legal Events